function addMenuItem(name,url,infoBox) {
        document.write("<div style='position:relative;'>");
        document.write("        <div style='position:absolute;top:1px;left:1px;'>");
        document.write("                <span class='leftMenuLinksShadow'>"+name+"</span>");
        document.write("        </div>");
        document.write("        <div style='position:absolute;top:0px;left:0px;'>");
        document.write("                <a class='leftMenuLinks' href='"+url+"'>"+name+"</a>");
        document.write("        </div>");
        document.write("</div>");
}
function setMenuItemBkg(item) {
        item.style.backgroundColor='#003300';
}
function unsetMenuItemBkg(item) {
        item.style.backgroundColor='';
}

var mnuSelected = '';
function showMenu(menu) {
        hideMenu(mnuSelected);
        document.getElementById(menu).style.visibility = 'visible';
        mnuSelected = menu;
}
function hideMenu(menu) {
        if (mnuSelected != '')
                document.getElementById(menu).style.visibility = 'hidden';
}